Engine



FIG. 1 is a perspective view of an engine showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the figures show portions of the engine that form no part of the claimed design. 

CLAIM The ornamental design for an engine, as shown and described. 